Sorry I missed seeing this question earlier. I believe the OpenGL extension "WGL_NV_DX_interop" may provide a direct DX->OpenGL solution. I know the OpenGL extension was added to Intel drivers a while ago, but I do not know the latest performance (or if it even supports NV12 media surfaces). I'll check.

I just checked this and I see glew-1.10.0 reporting this extension as supported.

Are you accessing your platform while the Intel graphics adapter is active and DirectX usage is available?

There are several reasons why usability of any Direct3D9 capability might not be available. (old hardware, remote desktop usage with no monitor, etc.)

Are any D3D9-based applications successfully operating with acceleration? (including MediaSDK?). You can run "dxdiag" and provide the output if you would like me to analyze why you might not be seeing the WGL_NV_DX_interop extension supported.

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From this DxDiag output, it looks like the Intel(r) HD Graphics drivers have not been installed yet (vga driver was listed). You can obtain the latest drivers here from downloadcenter.intel.com.

Also, i noticed this is running Windows 7. The Intel(r) 3rd Generation system i checked was running Windows 8. I believe the Intel OpenGL capabilities are the same on win7 and 8, but I can check with others to make sure.